Extended Data Fig. 6: Low-energy electronic structure of Ag(111)/Nb(110).
From: Proximity superconductivity in atom-by-atom crafted quantum dots
a, Large-scale constant-current STM image of a 12 nm thin Ag island. The black bar corresponds to 20 nm. b, dI/dV map at above-gap energy acquired with constant tip height and on the same region shown in panel a. The insets show the Fourier transform (FFT) of the dI/dV map. Parameters: V = −100 mV, I = 1 nA for panel a; Vstab = 10 mV, Istab = 2 nA, Vmod = 100 µV for panel b.
